Some kind of join

Question

Hi,
is ther any solution to display the following results to gether and for all tables of a schema :
SQL> select count(*) from myshema.atable;
  COUNT(*)
       117
SQL> select num_rows,table_name  from all_tables where OWNER='myschema' and table_name = 'atable';
  NUM_ROWS TABLE_NAME
       117 atableThe aime is to compare num_rows from all_tables with real number of rows in tables.
Thank you.

Answer 1

Based on:
Laurent Schneider
http://laurentschneider.com/wordpress/2007/04/how-do-i-store-the-counts-of-all-tables.html
SQL> select
  2    table_name,
  3    to_number(
  4      extractvalue(
  5        xmltype(
  6 dbms_xmlgen.getxml('select count(*) c from '||table_name))
  7        ,'/ROWSET/ROW/C')) count
  8  from user_tables
  9 where iot_type != 'IOT_OVERFLOW'
10 or    iot_type is null;
TABLE_NAME                      COUNT
DEPT                                4
EMP                                14
BONUS                               0
SALGRADE                            5Index Organized Table - Overflow Table
If such tables exist they cannot have "count(*)" done on them -
ORA-25191: cannot reference overflow table of an index-organized table
You can simply add the num_rows into the above query.